Language is fantastically complex. Its built-in means ofcombining and recombining(nesting)of its various levels have【M1】______suggested to many leading linguists that language istheoretically infinite though not practical so in everyday usage.【M2】______It almost sounds too complex to be able to detect any significant leveling out of language any more than one could detect by observation that the sun is burning itself out. As far as I am conscious no linguist seriously purports that【M3】______the restructuring process of language overrides the streamliningprocess resulted in a qualitative positive development of【M4】______language. If we decide that language did originally develop,possibly evolving animal communication, we can only do【M5】______so by assuming evolution to be a universally valid principle This type【M6】______of a priori reasoning was the basic fallacy of pre-NineteenthCentury "speculative grammar" which was pre-scientific in modern【M7】______sense of the word. However, the observable data neither indicate that such a【M8】______period of pre-historic development even existed, nor they【M9】______suggest a cause of the subsequent state of equilibrium or process of simplification that would have to have come into operation at some time after such a pre-historic development. Noam Chomsky, one of the most prominent linguists of the twentieth century, has indicated that human language and animal communication are not even comparative entities, they are so【M10】______different. 【M2】